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Accounts Payable And Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Accounts Payable And Other Current Liabilities [Abstract]
Income and other taxes payable	$ 635	$ 496
Accounts payable	612	749
Accrued wages and vacation	340	370
Interest payable	326	289
Current operating lease liabilities (Note 16)	321	362
Accrued casualty costs	177	190
Equipment rents payable	101	100
Other	592	538
Total accounts payable and other current liabilities	$ 3,104	$ 3,094

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Costs accrued as of the balance sheet date for liabilities incurred (and for which invoices have typically been received) and payable to vendors for rent for freight cars owned by other railroads or private companies including lease expenses primarily for railcars, containers and trailers. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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